Istio is an open source service mesh to connect and control microservices in cloud native applications running on Kubernetes. One of the key features is traffic management for A/B testing, canary rollouts and blue-green deployments. (more…)

Yesterday Harald Uebele, Thomas Südbröcker and I presented Blue Cloud Mirror in an IBM Developer webinar. Below are the slides and the recording. (more…)

This week I've attended JavaLand, a developer conference in Germany with 2000 attendees. It has been the fourth time I've been there and, as always, it has been a great pleasure. We had a booth where we talked with developers about what IBM offers for Java developers and how IBM contributes to the Java community, for example by supporting AdoptOpenJDK. (more…)

Last week Red Hat introduced the open source framework Quarkus which promises fast boot times and low memory usages. This makes Quarkus interesting for Java workloads running as serverless functions. (more…)

Previously I blogged about how to implement and document REST APIs in JavaEE applications with Eclipse MicroProfile. In this article I describe the inverse scenario how services can invoke other services via REST APIs over HTTP. (more…)

Quarkus is a "next-generation Kubernetes native Java framework" which is available as open source. Quarkus promises fast boot times and low memory usages. This makes Quarkus a perfect fit for Java workloads running as microservices on Kubernetes as well as Java workloads running as serverless functions. (more…)

The standard way to implement REST APIs in JavaEE applications is JAX-RS. The de-facto standard for API documentation is OpenAPI (formally Swagger). Eclipse MicroProfile supports developers to use OpenAPI annotations for JAX-RS API implementations to document the APIs. (more…)

Last week Red Hat introduced Quarkus which is a "next-generation Kubernetes native Java framework" that is available as open source. Quarkus promises really fast boot times and low memory usages. This makes Quarkus a perfect fit for Java workloads running as microservices on Kubernetes as well as Java workloads running as serverless functions. (more…)

As stated in the reactive manifesto cloud-native reactive applications need to be resilient: (more…)

For cloud-native applications Kubernetes and Istio deliver a lot of important functionality out of the box, for example to ensure resiliency and scalability. This functionality works generically for microservices, no matter in which language they have been implemented and independent from the application logic. (more…)